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    <title>Document</title>
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    <img width="300px"  src="../音视频/6.jpg" alt="图片加载失败文字说明">
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     <!--视频
     controls控制条
     loop循环播放
     autoplay自动播放
     muted静音播放
     poster设置封面
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     <video width="400px" muted loop poster="../音视频/6.jpg" src="../音视频/1.mp4" controls></video>
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     音频audio
     controls控制条
     autoplay自动播放
     muted静音播放
     loop循环播放
     width height poster不可用
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     <audio autoplay loop muted controls src="../音视频/1.mp3"></audio>
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